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Finding the Fourth Proportional to 283,651.72, 391,539.62 and 253,384.48

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Solution

The fourth proportional to 283,651.72, 391,539.62 and 253,384.48 is: 349,760.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,651.72 : 391,539.62 = 253,384.48 : x
  2. Step 2: Convert to fraction form
    283,651.72/391,539.62 = 253,384.48/x
  3. Step 3: Cross multiply
    283,651.72x = 391,539.62 × 253,384.48
  4. Step 4: Simplify right side
    283,651.72x = 99,210,063,013.10
  5. Step 5: Solve for x
    x = 99,210,063,013.10/283,651.72
  6. Step 6: Final answer
    x = 349,760.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.